Newbie question here. Can a Spektrum SR3300T RX bind with an Airtronics MX-V transmitter?

No.

2.4ghz systems are not brand compatible.

Thank you, wasn't sure because I've read some brands are interchangeable. I'm a little old school remembering crystals and all.

If you are looking to get rid of that 3300t let me know. PM or call/text 715 896-1908. I just put 6 Volts into the port that is CLEARLY MARKED, 3.3V max so will be replacing that one with something.
Kris